Repeating attachment for sound-reproducing machines



6 l',7 June 7,1927. v c. J COOKE ET AL l, 3 97 REPEATING ATTACHMENTI FOR SOUND REPRODUGING MACHINES Filed sept. 25', 192s Patented June 7, 1927. K I p unirse STATES PATENT orifice.

CHARLES J'. COOKE, OF WASHINGTON, DISTRICT OF COLUMBIA, AND JOHN A. RENNIE, OF NEW YORK, N. Y., ASSIGNORS TO CHARLES E. SHEPPARD, OF LONG ISLAND CITY, NEW YORK.

REPEATNG ATTACHMENT FOR SOUND-REPRODUCING MACHINES.

Application filed September 25, 1923. Serial No. 664,740. i

Our invention relates to record lrepeating cate corresponding parts in the Several 65 attachments for sound reproducing maviews: y y chines, and has 'for an obj ect simplification n Figure 1 is a top plan View in normal posi-1 ot and certain structural improvements upon tion, of our present invention applied in e the repeating attachment for phonographs Operative relation to the face of a soundrepresentod by U, S, Letters Patent No, reproducing record of disk form, the latter GU 1,378,382, issued March 29, 1921, to Charles broken away for economy of 'space upon the John Cooke, one of the present joint appli- Sheet; l cante, Figure 2 is also a top plan view corre-` Tie present invention has for a further Sponding With Figure 1, except thatl here object the production of a self-contained atthe reproducing needle has been autoinati- G5 tachment of the character indicated, capable cally projected to its outermost or starting of automatically repeating a `musical or point upon the record; v other record, indefinitely, Within the range v Figure 3 is a side elevation ofthe invenc ot' the motor employed, and practically UGH 1111101111211 pOSltlOu;

without interruption.

Sound reproducing` machines such as vic- JCLHIY VleWkeD 1113011 1111 4 4 0f Figure l, {g1-Olas, glaphophones phonoglaphg and like SllOWlUg' 111 lOIlglt'ldlIlal VeIlCl and ,C611- instruments are extensively employed for m11 SQCIOII the plvotal COHHGCUOU 0f the' 2.0 the purpose ot producing dance music, and 0131j1111g iufm;

in this use obviously, it is desirable to repeat Figure 5 1s also an enlargedfragmentary 7 the selecti-on vcontinuously Without the inter- VlGVY O PIS'l'GPIeeDGd by Flglfe 4; ruption incident to replacing the reproduc- .Figure 6 1S e l'egllentli'y perspective im@ needle by hand, Y v view -of an ordinary reproducing needle, en-

i A further object of the present invention gaged by the PlckuP end 0f the improved is the production of an extremely simple, in-` Opelatlng erm; Y 8o expansiva and efficient attachment ofthe .Figure 7 1s a View corresponding with character indicated, arranged and adapted Flgule 6 but at right :Ingles thereto, being to automatically lift the sound-box or reteken 011 the` line 7-7 Oi said Figure 6.; and

3o producer each time vits needle reaches the Figure 8 iS a Vertical central section end of a record, instantly and automatically through the spring retained hollow attach- S5 return same to its starting point, and thereing boss.

upon lower said needle into operative en- Reference being had to the drawings and gagement With the record-groove, practicharacters thereon, A indicatesthe upper, cally without mterruptlon pointed and protruding end of anv ordinary A fm-ther object is the production of driving shaft, under control of a motor, not 49o means whereby the sound-box is .automatishown, B indicates a circular disk record muy replaced 01; reset as aforesaid, by nnpaled centrally upon said shaft A in the agency ot' needle-engaging mechanism. ordinary and Well understood manner, C the e0 Another object of the present invention is usual needle socket depending from soundthe production of repeating attachments calOOX (DO Sh0WI1), v and D a reproducing` 95 pable ot' instant and easy application to needle carried by said socket as usual. sound reproducing vmachines of the disk- The numeral 10 indicates the base-plate record type, without the employment of ator turntable of the present invention formed taching tools of any description, and Withpreferably of relatively thinrmetal, its exact out the possibility of incorrect application. outline or configuration being immaterial.r 10o rihe present invention further consists in This base plate is perforated as at 11, and certain novel features of construction, and is there provided with a rigid upstanding in the arrangement and combination orn parts hollow thimble 12 as best shown by Figure hereinafter described and more particulf-irly 8 of the drawings.

pointed oui` by the claims following. Hthin the thimble 12 as by means of a 105 In the accompanying drawings which drive fit is rigidly secured the upper thick! form part oit this application for Letters ened end of a tubular barrel-spring 13 Patent, and Whereon like characters indislotted longitudinally at diametricallyk op- Figure 4 is a relatively enlarged fragmen- To CFI posite points'as at 14, thus providing for a degree of radial expansion and contraction, or spring action, whereby the entire base is removably but firmly retained by frictional engagement upon the driving shaft A, and in contact with the central upper surface of a record B as shown.

Rotatably mounted in the base plate 10 near one end, and adjacent the attaching thimble 12, is a shouldered pivot or stud which is retained in position by means of riveting said stud 15 over washer 16 as at 17 in underside of base. This pivot stud 15 has an enlarged head 18, which offsets a coil spring 19 by which the said stud is surrounded as shown by Figures 3, 4, and 5, and for purposes that will later appear.

As best shown by Figure 4, the said stud 15 is surrounded at its base by a boss pressed out of and integral withbase 10, and serving as a shoulder upon which stud 15 freely rotates. A pressed cam surface 20 is concentric with stud 15, and its ends 21 and 22 are bevelled as shown.

The vupper end or headv of the stud 15 is provided with a horizontal througlrslot 23 slightly velongated to receive a transverse trunnion pin 24, the opposite endso'r.' which find bearings in down-turned flanges 25, 25, of anactuating arm 26.

This actuating arm is provided with a down-turned cam-engaging projection or tongue 2T arranged and adapted to travel over the cani track 20, and to raise or lower the arm 26 when occasion requires, as it ascends or descends the beveled edges or inclines 21 or 22, respectively.

At its outer end the said actuating arm is provided with integral picking lingers 28 separated by a Vgroove 29 for contacting with and pickingup a reproducing` needle at predetermined intervals as wiil appear in a description of operation.

The coil spring 19, hereinbefore referred to, is anchoredv at one end 30 in a small hole su-nk into the surface of base-'plate 10, and at its opposite end 3l angles sharply through the root of tongue 2T, in which position it serves the two-fold purpose of always returning arm 26 to its normal position against thimble 12 serving as a. fixed stop therefor, and of' normally, but yieldingly advancing the horizontaly trunnions 24 to the forward end of their supporting slot 23 in the rotatable stud 15.

tubular barrel 13 in frictional contact'with the under surface of base-plate 10 resting squarely upon the central ungrooved portion of record B, as indicated by Figures 1 and 3.

1n this normal relation of parts, the niotor (not shown) is started, and the reproducing needle or stylus D is lowered into engagement with a groove near the outer edge of the record as in the ordinary use of such reproducing instruments, our improved attachment in the meantime, rotating bodily and ooncentrically with disk B around the central drive shaft A.

Gradually approaching the center of record B the needle D is finally led directly into the V-groove 29 between picking fingers 28-28, thus retarding the distal end of actuating armv 26. At the same time the con tinued rotation of base 10 moves incline 21 beneath the lowermost rounded end of tongue 27 to quickly elevate the outer end of arm 26, and with it the needle socket Gand needle D clear of the record B. The' reproducing needle is thus maintained in an elevated position ywhile base 10 is rotated to the position indica-.ted by Figure 2 of the drawings, tongue 27 riding over the surface of cam plate 20,'until its incline 22 is reached down which latter it descent s, at the instant the ar1n-26 reaches its extreme outermost position as shown by Figure 2. y

The descent of tongue 2T as aforesaid causes needle D to correspondingly descend in. its reset position at beginning of the record, whereupon further rotation of base.

andl the regular advance, or feeding in, ofI

needle D, the pitch and character of the recordgroove is such that the outer linger reaches well beyond the center of needle D as shown by Figure 7, the replacing or resetting process instantly takes place; but on the other hand when the character of the yrecord groove is suchthatthe feed of the reproducervneedle causes the outer finger 28v to strike short of t-he center of said' needle, one of two results must follow, either the needle will be caused to Vcut over int-o the preceding groove thus injuring the recorch or said finger 28 must be capable of yielding so that it may brush past needle D for another complete rotation. latter is what happens, and the advance finger 28 slips to one side or the other of In practice the needle D. It to the far side the repeater functions at once; if to the near side the entire arm 26 yields, and as the outermost pick-up linger 28 brushes past the body of needle D the said arm Qo is reciprocated longitudinally' on its trunnions Q4 the length ot' slot 23, this being suificient to permit passing needle D which is picked up on the next round of the lingers 28, to be thus again returned to the starting point.

Upon the tace of base plate l0 a blank line 32 and two oppositely positioned arrows 33 are stamped as a means of indicating the correct extension of needle D from its socket C, in accordance with the n rmal height of arm 2f' and its pick-up fingers 28; and, it

'ill be noted that engagement of the said fingers 28 with needle D causes the iormer to travel up the latter as a guide, until arrested beneath the under surface of socket C which is thereupon litted bodily carrying with it the reproducing needle. i

The 'foregoing being a description of our presentinvention in one approved form ot construction, it will be understood that the parts herein shown and described may be variously modilied, altered and rearranged without in the least departing from the spirit of the invention involved, so long as .substantially the same results are accomplished, and to all such modifications we lay claim the same as if herein set forth and described.

Having thus described our inventionY in one complete and operati ve form ot embodiment what we now claim and desire to secure by Letters Patent is:

l. In a repeating attachment for sound reproducing machinesL the combination with a supporting base, ot' an actuating arm pivoted eccentrically upon said base, means cooperating with said arm for causing its :tree end to engage a reproducing needle to lift and return the same to its starting point, and a hollow thiinblc having a split tubular lining ot springl material and of downwardly converging form permanently driven into said thimble tor holding the attachment in operative position.

2. In a repeating' attachment for sound reproducing machines, the combination with a supporting oit an actuating arm pivoted eccentrically upon said base, means cooperating with said arm for causing Aits free end to engage a reproducing needle lo lift and return the same to its starting point, and a hollow thimble, having a split tubular lining ot spring material and ot downwa rdly converging form permanently driven into said thimble tor holding the attachment in operative position, serving also as a stop tor said arm, and a spring 'for returning said arm to normal position after each opc ation 3. In a repeating attachment for sound reproducing machines, the combination with a supporting base, of an actuating arm pivoted eccentrically upon said base, pick-up fingers raised above the distal end of said arm, means cooperating with the actuating arm tor causing its said fingers to engage, litt and return a reproducing needle to its starting point, and a hollow thimble having a split tubular lining ot 'spring material and of downwardly converging form permanently driven into said thimble for holding the attachment in operative position.

d. In a repeating attachment for sound rel'iroducing machines, the combination with a supporting base, of an actuating arm piv-v oted eccentrically upon said base, means cooperating with said arm for causing its free end to engage a reproducing needle to lift and return the same to its starting point, and a hollow thimble having a radially split eXpansible tubular lining arranged and adapted to secure the attachment in operative position.

5. In a repeating attachment for sound reproducing machines, the combination with a supporting base, of a stud pivoted eccentrically upon said base, a vertically movable actuating arm pivoted upon said stud,means lor permitting slight longitudinal movement of the actuating arm relative to said stud, means cooperating with said arm for causing its free end to engage, lift and return a reproducing needle to its starting point, and a. hollow spring-retained thimble for securing the attachment in operative position.

6. In a repeating attachmentfor sound reproducing machines, the combination with a supporting base, of an actuating arm pivoted 'eccentrically upony said base, means carried by said arm for engaging and lifting a reproducing needle, means for returning said needle to a starting point, a split hollow tubular spring retaining-thimble for securely holding the attachment in operative position, and a coil spring for yieldingly holding saidactuating arm in its normally advanced position and tor returning it into engagementy with the thimble aforesaid after each needle replacement.

7. In a repeating attachment for sound reproducing i'nachines7 the combination with a supporting base, of an actuating' arm pivoted eccentrically upon said base, means for permitting said arm to yield slightly in a longitudinal direction, and means cooperating with said arm 'for causing its outer end to engage, litt and return a reproducing needle to its starting point, whereby in the event oi' incomplete engagement of the reproducing needle the arm will automatically pass the latter Yfor 'further rotation with the record.

In testimony whereof we affix our signatures.

CHARLES J. COOKE. JOHN A. RENNIE.

ioo 

